Over the past 5 years, CHYM has had 2 qualifying gap-up events (5%+ at the open) and no qualifying gap-downs. Gap-ups averaged +9.3%, 100% have fully filled, median time to fill 21.5 trading days. Most recent: a +9.3% gap up on Sep 9, 2026, which filled in 6 trading days. Average 20-trading-day return after a CHYM gap up: -1.02%.

Gap Ups2 events

Fill Rate

100.0%

Avg Gap

9.3%

Avg 50% Fill

17.5d

Avg Fill

21.5d

Avg 20d return after gap-up: -1.02%

Avg Gap Fill by Timeframes

Gap Ups

	1 day	1 week	2 week	4 week
fills 25%	50%	50%	50%	50%
fills 50%	50%	50%	50%	50%
fills 75%	0%	50%	50%	50%
fills 100%	0%	50%	50%	50%

Complete Gap History — 2 events

Date	Gap From	Gap %	Status	Days to 50%	Days to Fill	% of Gap Filled After
Date	Gap From	Gap %	Status	Days to 50%	Days to Fill	1 day	1 week	2 week	4 week
2026-09-09	$32.31	+9.35%	Filled	1d	6d	60%	100%	100%	100%
2026-08-06	$25.92	+9.18%	Filled	34d	37d	23%	23%	23%	23%

Frequently Asked Questions

What is CHYM's premarket price?

No premarket activity has been recorded yet for CHYM today. The previous regular-session close was $28.80.

When does CHYM premarket trading start?

Premarket trading for CHYM on the NASDAQ runs from 4:00 AM to 9:30 AM Eastern Time, ahead of the regular session (9:30 AM – 4:00 PM ET). After-hours runs from 4:00 PM to 8:00 PM ET.

How often does CHYM fill its gaps?

Over the past 5 years, 100% of CHYM gap-ups have fully filled. Median time to fill is 22 trading days for gap-ups.

Does CHYM have any unfilled gaps?

No. CHYM has no unfilled gap events from the past 60 days; all recent gaps have been filled.

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